profile: Ningbo Guoguang Biotechnology Co., Ltd. is an expert in producing food chemicals, diet enhancer, and medical intermediate items. Our items include l-citrulline dl-malate, l-citrulline l-malate, L-Proline, DL-Methionine(acimetin), L-Valine, L-Norvaline, L-Ornithine Hydrochloride,l-cysteine hcl anhy, L-Methionine, s-carboxmethyl-l-cysteine, L-Threonine, L-arginine,L-Methionine and L-Histidine. L-proline is really a white-colored very or crystalline powder, and has slightly flavor. It's soluble in water, freely soluble in glacial acetic acidity, moderately soluble in ethanol and practically insoluble in ether. These can be found in various standards including AJI92, USP26 and EP4. L-ornithine hydrochloride is really a white-colored very or crystalline powder with characteristic odor. They are freely soluble in water. L-cysteine Hcl anhy is really a white-colored very or crystalline powder and includes a strong acidity taste. This really is freely soluble in water & ethanol and...